<extend name="public@base"/>
<block name="seo">
    <php>$new_page=empty($page_i18n)?$page:$page_i18n;</php>
    <title>{$new_page.post_title}</title>
    <meta name="keywords" content="{$new_page.post_keywords}"/>
    <meta name="description" content="{$new_page.post_excerpt}">
</block>